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Question
- In the following pattern, draw the next two figures.
- Construct a table to describe the figures in the above pattern.
- If n denotes the number of figures and L denotes the number of matches, find L in terms of n.
- Find how many matches are required to make the :
(1) 12th figure
(2) 20th figure
Sum
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Solution
-
n 1 2 3 4 5 L 2 4 6 8 10 - L = 2n
(1) 12th figure 12th figure has = 2 x 12 = 24
(2) 20th figure = 2 x 20 = 40
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